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Australia
Jacinth-Ambrosia Mine

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 Location:
742 km NW from Adelaide, South Australia, Australia

  Regional Office:
Level 17, 240 St Georges Terrace
GPO Box U1988
Perth
Western Australia, Australia
6845
Phone  ...  Subscription required
Fax+61-8-9360-4777
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Heavy Minerals
  • Ilmenite
  • Zircon
  • Rutile
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2029
Jacinth-Ambrosia operation is the world’s largest zircon mine. Comprising two contiguous deposits, Jacinth and Ambrosia.


Owners

Source: p. 139
CompanyInterestOwnership
Iluka Resources Ltd. 100 % Indirect
Iluka (Eucla Basin) Pty.Ltd. (operator) 100 % Direct
Iluka Resources Ltd. owns a 100% interest in Iluka Resources (Eucla Basin) Pty. Ltd., which owns and operates Jacinth-Ambrosia mine.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Sedimentary
  • Mineral sands


Summary:

The regional geology of the Eucla Basin includes Tertiary sediments deposited in marine and terrestrial settings in the south west part of South Australia (Benbow et al. 1995) and extends into adjacent parts of Western Australia. The Jacinth-Ambrosia (J-A) Project area occurs in Tertiary age sediments of the Eucla Basin. North of the J-A Project area, the Eucla Basin is underlain by the older Palaeozoic Officer Basin, which subcrops and outcrops north of the railway. South east of the J-A Project area, Eucla Basin sediments overlie the Precambrian Gawler Craton, which subcrop and outcrop to the east (Iluka 2007b). The Jacinth deposit is a north-south oriented palaeo-sedimentary sand deposit approximately 5 km long by 900 m wide and up to 42 m deep. The average thickness of overburden is approximately 8 m. Ore thickness ranges from approximately 20 - 45 m. The Ambrosia deposit consists of a larger central zone up to 700 m wide, approximately 2.2 km long and up to 30 m deep as well as three smaller satellite pits to the east and north. The average ore thickness is 12 m; overburden thickness varies, averaging 8 m. Soils The soil distribution across the J-A Project area reflects the geological history of the area. At least five marine transgression and regression events have occurred in the Eucla Basin (depositing 40–50 m of sediments), the most recent event forming the Nullarbor Limestone found in the borefield and pipeline areas. The sedimentary sequence overlies partially ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

There are two separate, discrete ore bodies that make up the operations, Jacinth and Ambrosia. In order to access the target ore, topsoil, subsoil and overburden are removed. These are typically removed using a combination of excavators, haul trucks and tractor scoops and are either stockpiled or direct-returned to the mine void pending final surface rehabilitation.

Dry mining techniques are used for recovery of the ore. The sand, containing heavy minerals, is fed into the Mining Unit Plant (MUP) to remove oversized material, including rock and other debris, before being slurry pumped to the Wet Concentrator Plant (WCP).

Mining of the Jacinth and Ambrosia deposits is undertaken as a continuous operation with mining and processing operations (including mineral haulage) occurring 24 hours, 7 days a week.

An estimated 93 Mt of ore will be mined over the remaining LOM at a rate of approximately 10 Mt per annum, yielding between 0.2 and 0.4 Mt per annum of HMC.

At current rates of production and ore reserves, the estimated remaining LOM is 10 years (i.e.ending in 2029).

Pit design
The final planned mining area will be approximately 3.6 km long, 800 m wide and an average of 25 m deep at Jacinth, and 2.5 km long, 800 m wide and average 25 m deep at Ambrosia.

Geotechnical investigations determined that pit slope design was for the two pits were 40 degrees for the red and browns loams and 30 degrees for the Ooldea ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityProductUnits202220212020201920182017
Heavy Minerals Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required674
Ilmenite Mineral kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zircon Mineral kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Rutile Mineral kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required9,845 kt10,312 kt620 kt
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required1,465,000 bcm3,010,000 bcm816,000 bcm
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required
Hourly processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required1,000 t
Subscription required - Subscription is required.

Reserves at December 31, 2022:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 51 Mt Heavy Minerals 2.9 % 1.5 Mt
Proven & Probable 1.5 Mt Ilmenite 23 %
Proven & Probable 1.5 Mt Zircon 51 %
Proven & Probable 1.5 Mt Rutile 5 %
Measured 184 Mt Heavy Minerals 2.6 % 5 Mt
Measured 5 Mt Ilmenite 33 %
Measured 5 Mt Zircon 41 %
Measured 5 Mt Rutile 3 %
Indicated 93 Mt Heavy Minerals 9.5 % 9 Mt
Indicated 9 Mt Ilmenite 68 %
Indicated 9 Mt Zircon 18 %
Indicated 9 Mt Rutile 2 %
Inferred 48 Mt Heavy Minerals 5.1 % 2 Mt
Inferred 2 Mt Ilmenite 61 %
Inferred 2 Mt Zircon 19 %
Inferred 2 Mt Rutile 2 %
Total Resource 325 Mt Heavy Minerals 4.9 % 16 Mt
Total Resource 16 Mt Ilmenite 57 %
Total Resource 16 Mt Zircon 25 %
Total Resource 16 Mt Rutile 2 %

Commodity Production Costs:

CommodityUnits20222021202020192018
Cash costs Heavy Minerals AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 491 / t  
Cash costs (sold) Heavy Minerals AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units20222021202020192018
Capital expenditures M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 568.6  
Pre-tax Income M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 358.9  
EBIT M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 364  
EBITDA M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 378.8  
Subscription required - Subscription is required


Pipelines and Water Supply
Source: Subscription required

- subscription is required.


Heavy Mobile Equipment as of October 31, 2018:
HME TypeModelSizeQuantity
Bulldozer ....................... Subscription required ....................... Subscription required
Bulldozer ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Truck (dump) ....................... Subscription required 150 t ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 29, 2023
....................... Subscription required ....................... Subscription required Subscription required May 26, 2023
....................... Subscription required ....................... Subscription required Subscription required May 26, 2023
....................... Subscription required ....................... Subscription required Subscription required May 29, 2023
....................... Subscription required ....................... Subscription required Subscription required May 26, 2023
....................... Subscription required ....................... Subscription required Subscription required May 26, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Annual Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Corporate Presentation 2018
Corporate Presentation 2018
Other 2018
Annual Report 2017
Press Release 2017
Other 2010
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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